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Method for calculating furnace top gas volume based on blast furnace working condition

A calculation method and a furnace top gas technology, which are applied in the field of iron and steel metallurgy blast furnaces, can solve the problems that the key parameters of the blast furnace cannot be calculated to provide an accurate basis for the balance of the blast furnace gas, and the amount of the top gas cannot be accurately reflected, so as to achieve the effect of facilitating the balance of blast furnace gas

Active Publication Date: 2021-06-18
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional top gas calculation method cannot accurately reflect the real level of top gas volume under real-time working conditions, and cannot provide an accurate basis for the calculation, operation, and gas balance of blast furnace key parameters

Method used

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  • Method for calculating furnace top gas volume based on blast furnace working condition
  • Method for calculating furnace top gas volume based on blast furnace working condition
  • Method for calculating furnace top gas volume based on blast furnace working condition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0117] The calculation method used in the implementation case 1 is the calculation method of the present invention, calculates the furnace top gas volume (Q 炉顶煤气量 ), the specific results are shown in Table 3.

[0118] Table 3 Implementation Case 1 Results

[0119]

[0120] By comparing with the traditional calculation method, compared with the calculation result of the present invention, the calculation result of the top gas volume of the traditional measurement result is relatively small, and the deviation is about 10% under the coal injection load furnace condition.

Embodiment example 2

[0122] The above three working conditions are the conditions of three different production periods of the blast furnace, corresponding to the statistics of the blast furnace gas production under these working conditions, this implementation case calculates the period of time by counting the consumption of blast furnace gas users.

[0123] Table 4 The actual production results of the implementation case

[0124]

[0125] The results of the benchmark embodiment to the implementation case 2 are compared, and the comparison results are shown in Table 5.

[0126] Can find out by result comparison, the method for traditional blast furnace top gas measurement and calculation can't accurately calculate the top gas volume under various working conditions of blast furnace, and the top gas volume under the working conditions measured and calculated by the present invention and blast furnace various working conditions The variation trend of the statistical furnace top gas volume under ...

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Abstract

The invention discloses a method for calculating a furnace top gas quantity based on a blast furnace working condition, which comprises the following steps of: 1, counting an air blast quantity entering a furnace, a humidification quantity and a combustion quantity of pulverized coal in unit time, and according to a big data analysis and regression method, counting the amount of carbon consumed by carburizing reaction and the amount of carbon entering the fly ash under different fuel ratios; 2, calculating the amount of carbon combusted in unit time according to the blanking speed in unit time; and 3, the generation amount of the furnace top gas amount under the working condition being determined. By means of the mode, the furnace top gas amount of the blast furnace under the real-time furnace condition can be measured, calculated and accurately reflected, conditions are provided for calculation of the furnace top gas flow speed, accurate data are provided for blast furnace operation analysis, blast furnace operation is guided, and a basis is provided for organization of blast furnace gas balance under different working conditions; accurate data are provided for balance calculation of key production parameters such as blast furnace direct reduction degree, RIST operation line, whole furnace material balance and the like.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy blast furnaces, in particular to a calculation method based on the furnace top gas volume under blast furnace working conditions. Background technique [0002] Blast furnace top gas measurement has always been a difficult point in blast furnace production. The traditional calculation method is to use N2 balance to calculate the top gas volume. Due to the inaccuracy of the top gas composition measurement, the value obtained by traditional calculation is inaccurate. However, the measured value of the gas volume at the TRT inlet fluctuates greatly, which is inconsistent with the actual situation and cannot meet the actual production conditions. Even the blast furnace expert system developed by foreign companies only uses N2 balance to calculate the gas volume at the top of the furnace. Therefore, most of the domestic blast furnaces currently do not have a top furnace On-line calcula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F17/18
CPCG06F30/20G06F17/18
Inventor 李昊堃巩黎伟梁建华史永林李勇刚范建军郑伟刘文文
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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